T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, without consecutive moves in the same direction.
A221873
T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, without consecutive moves in the same direction.
Terms
- a(0) =0a(1) =1a(2) =1a(3) =0a(4) =20a(5) =0a(6) =1a(7) =162a(8) =162a(9) =1a(10) =0a(11) =1442a(12) =2847a(13) =1442a(14) =0a(15) =1a(16) =12688a(17) =109441a(18) =109441a(19) =12688a(20) =1a(21) =0a(22) =110720a(23) =2902629a(24) =14388224a(25) =2902629a(26) =110720a(27) =0a(28) =1a(29) =970828
External references
- oeis: A221873